Seamless aluminum well for fireless cook-stoves.



M. MURPHY.

sEAMLLss ALUMINUM WELL PoR PIRELESS COOK sTovEs.

APPLICATION FILED 00T.22,1912.

Patented Nov. 17, 1914.

NORTON MURPHY, OF JANESVILLE, WISCONSIN.

SEAMLESS ALUMINUM WELL FOR FIREpJl-'JESS COOK-STOVES.

speeianon of Letters Patent.

Patented Nov. 17, 1914.

Application led October 22, 1912. Serial N o. 727.224.

To all whom t may concern Be it known that I, MoR'roN MURPHY, a citizen of the United States, residing at 117 Racine street, Janesville, in the county of` well of the cooker in such a manner as to prevent the well of the cooker from being affected by the steam or heat within the well. The well of the cooker is preferably made of aluminum which metal possesses great expansive qualities. By having the well made of one `piece it will be seen that no seams will be formed upon the jvell, which v would be likely to become expanded and contracted according to the variation of the temperature within the well, which would likely cause the separation of the seams or joints if such seams or joints were formed upon the well.

Another object of this invention is the production of an efficient lining for the cooking compartment which may be easily cleaned.

With these and other objects in view, this invention consists of certain novel constructions, combinations and arrangements of parts as will be hereinafter fully described and claimed.

In the drawings: Figure 1 is a sectional perspective view of the cooker. Fig. 2 is an enlarged sectional view showing the connecting joint of the well with la metallic casing of the cooker. f i

By referring to the drawing by numerals it will be seen that 1 designates the body of the cooker which maybe ormed of any size or shape desired, which is provided with a metallic lining 2, preferabl of aluminum or an alloy of aluminum an this lining is provided with a top3 having a central opening 4 formed therein for receiving the well 5. The cover 3 is provided around the edge of the opening 4 with a downwardly punched lodged portion 6, terminating in a rearwardly extending overhanging spaced flange 7 `formed parallel to the ledge 6. n

A metallic well is placed through the aperture 4 formed 1n the cover 8 and this well comprises a tubular body 8 terminating at its upper end-in an upwardly and outwardly curved flange 9 formed integral with the body 8. This flange 9 terminates at its outer edge in an under-rolled flange l0 which flange 10 is fitted between the flange 7 and ledge 6 of the cover 3. The curved flange 9 is so placed in engagement with the ledge 6 and flange 7 as to have its upper edge extend flush with the upper face of the cover 3.

From the foregoing description it will be seen that a very efficient and durable connecting means has been produced whereby the well of the cooker will be supported in an efficient manner, the connecting joint being formed outside of the well itself so as to prevent the steam or heat Within the well from affecting the joint which would be likely to cause expansion and contraction of the well according to the variance in the temperature. l

Since there is no method of successfully seaming, soldering, or joinin pieces of aluminum so as to produce an e cient steam and water-tight joint, it will be understood that a very important improvement has been produced by constructing the well of the tireless cooker, in the manner above .described. Of course, it should be understood that this well- 5 is made by means of drawing dies and tools which will produce a seamless vessel. It should be understood that the cover of the well 5 is situated upon the flange 9 so as to prevent the passage of steam or heat beyond the cover. By use of the present device it will beseen the insulation surrounding the well or cooking compartment will be prevented from becoming wet,soggy,

unsanitary or ineflicient, owing to the fact that there will be no seams throu h which the steam may pass which would e likel if seams were formed upon the vessel, for t ese seams would be caused to open and allow the steam and water to flow into the insulation, owing to the expansion and contraction of the aluminum or alloy of aluminum out of which the well is made. Of course, it should beunderstood that any number of these compartments or wells 5 may be employed. It will be further obvious that owing to the fact that the well is made of.v

one piece of material, the compartment or well will be entirely sanitary and free from grease or any other accumulation which might tend to lodge in the same. Furthermore, it Will be understood that there Will be no portions of the Well which will be subject to rust, and that the Well Will not crack or scale as is -noW the case with the Well used in the cookers noW placed upon the market. lt should be understood that kieselguhr insulation Will be used in connection with the present reless cooker for accomplishing the desired result, so as to retain the heat and overcome the radiation.

of the heat, which is occasioned by the use of aluminum which metal possesses great conductivity. 0f course, it should be understood that a tireless cooker or cook-stove may be manufactured with any number of wells and that these Wells may be made of any desired size.

What is claimed is:

As a new article of manufacture, a reless cook-stove comprising a body, a sheet nimes@ sitioned between said Well and said lining,

said seamless aluminum Well being formed of one piece and having its edges projecting laterally therefrom, `a cover plate carried by A the top of said body, interlocking -means formed around the edge of said cover t0 en-' gage the laterally projecting edge of said well beyond the sides thereof, and said seamless aluminum ivell y,being provided with a closure receiving ledge around the upper edge thereof.

ln testimony whereof lhereunto affix myy signature in presence of two Witnesses.

' MORTON MURPHY. `Witnessesz EDMUND BROWN, ELIZABETH Casar. 

